SE517668C2 - Control of system for ventilating and air conditioning of rooms - Google Patents

Control of system for ventilating and air conditioning of rooms

Info

Publication number
SE517668C2
SE517668C2 SE9503485A SE9503485A SE517668C2 SE 517668 C2 SE517668 C2 SE 517668C2 SE 9503485 A SE9503485 A SE 9503485A SE 9503485 A SE9503485 A SE 9503485A SE 517668 C2 SE517668 C2 SE 517668C2
Authority
SE
Sweden
Prior art keywords
temperature
flow
supply air
air flow
control unit
Prior art date
Application number
SE9503485A
Other languages
Swedish (sv)
Other versions
SE9503485D0 (en
SE9503485L (en
Inventor
Rolf Andersson
Original Assignee
Pm Luft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pm Luft filed Critical Pm Luft
Priority to SE9503485A priority Critical patent/SE517668C2/en
Publication of SE9503485D0 publication Critical patent/SE9503485D0/en
Publication of SE9503485L publication Critical patent/SE9503485L/en
Publication of SE517668C2 publication Critical patent/SE517668C2/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/76—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by means responsive to temperature, e.g. bimetal springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/044—Systems in which all treatment is given in the central station, i.e. all-air systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Ventilation (AREA)

Abstract

An indicator detects the temperature in the air flow in or from the room and a control unit controls the flow and temperature of air. The control unit adjusts the input air flow and temperature to the temperature variations in the room in order to maintain the required temperature level. The control unit, on detection of an increasing cooling requirement, successively lowers the input air temperature from a normal level in the direction of a minimum level until the required temperature level is achieved. The air flow is increased from a normal flow to a maximum flow if the input air temperature reaches the minimum temperature. Regulation of the input air occurs by means of a speed-regulated fan.

Description

.g av v: COO- I ouvv :Inc u I 517 668 TEKNISKA PROBLEMET Ett ändamål med föreliggande uppfinning är därför att åstadkomma en sådan styrning av ventilationssytemet, att ljudnivån och energiförbrukningen kan hållas låg under huvuddelen av dygnet. Ett ytterligare ändamål med uppfinningen är att reducera servicebehov och öka livslängden på komponenter i ventilationssystemet. .g of v: COO- I ouvv: Inc u I 517 668 TECHNICAL PROBLEM An object of the present invention is therefore to provide such a control of the ventilation system that the sound level and energy consumption can be kept low for most of the day. A further object of the invention is to reduce service requirements and increase the service life of components in the ventilation system.

LösNINGEN Detta åstadkommes enligt uppfinningen, genom att styrenheten, vid detektering av ett ökande kylbehov, successivt sänker tilluftstemperaturen i riktning mot en minimitemperatur för tilluften tills önskad temperaturnivå erhålles, riktning mot ett maximiflöde, varvid luftflödet ökas från ett normalflöde i om tillufttemperaturen når nämnda minimitemperatur.THE SOLUTION This is achieved according to the invention, in that the control unit, upon detection of an increasing cooling need, successively lowers the supply air temperature in the direction of a minimum temperature for the supply air until the desired temperature level is obtained, towards a maximum flow.

Enligt ett fördelaktigt utföringsexempel av' uppfinningen sänker styrenheten, vid detektering av avvikelse i riktning nedåt successivt tilluftflödet i riktning mot ett normalflöde tills önskad temperaturnivå erhålles, från den önskade temperaturnivån, varvid tilluftstemperaturen ökas från en minimitemperatur i riktning mot en normaltemperatur för inblåsningsluften, om tilluftflödet når nämnda normal- flöde.According to an advantageous embodiment of the invention, upon detecting deviation in the downward direction, the supply air flow gradually decreases in the direction of a normal flow until the desired temperature level is obtained, from which the supply air temperature is increased from a minimum temperature to a normal air temperature. reaches said normal flow.

Regleringen av tilluftflödet sker lämpligen medelst en varvtalsreglerad fläkt.The supply air flow is suitably regulated by means of a speed-controlled fan.

BESKRIVNING AV RITNING Uppfinningen kommer nedan att beskrivas med hänvisning till den bifogade ritningen, på vilken Fig. 1 i diagramform åskådliggör flödesregleringen av tilluften enligt uppfinningen, och Fig. 2 på motsvarande sätt visar temperaturregler- ingen enligt uppfinningen. vsov 517 668 slf~ 3 BESKRIVNING AV UTFÖRINGSEXEMPEL Ventilationssystemet omfattar på konventionellt vis minst en tilluftkanal tillhandahåller flödes- och temperaturregleras innan den leds ut i utrymmen som ventilationsluft, som i en byggnad. För detta ändamål omfattar ventilations- systemet organ för volymreglering av luftflödet och organ för temperering av tilluften. Dessutom omfattar systemet givare för detektering av temperaturen hos luftflödet till utrymmet och givare för detektering av temperaturen. hos luftflödet i eller från utrymmet samt en styrenhet för styrning av flöde och temperatur. Styrenheten är inrättad att tilluftens flöde till temperaturvariationer i utrymmet för bibehållande av önskad anpassa och temperatur temperaturnivå. Kylaggregat kan exempelvis användas för att tilluften. Alternativt temperaturen på tillgänglig tilluft vara så låg, att ingen påverka temperaturen på kan ytterligare kylning erfordras.DESCRIPTION OF THE DRAWING The invention will be described below with reference to the accompanying drawing, in which Fig. 1 illustrates in diagrammatic form the flow control of the supply air according to the invention, and Fig. 2 correspondingly shows the temperature control according to the invention. vsov 517 668 slf ~ 3 DESCRIPTION OF EMBODIMENTS The ventilation system conventionally comprises at least one supply air duct providing flow and temperature control before it is led out into spaces such as ventilation air, as in a building. For this purpose, the ventilation system comprises means for volume control of the air flow and means for tempering the supply air. In addition, the system includes sensors for detecting the temperature of the air flow to the space and sensors for detecting the temperature. of the air flow in or from the space and a control unit for controlling flow and temperature. The control unit is designed to supply air flow to temperature variations in the room to maintain the desired adaptation and temperature temperature level. Cooling units can, for example, be used to supply air. Alternatively, the temperature of available supply air may be so low that no effect on the temperature may be required.

Fig. 1 och 2 åskådliggör regleringen av ventilationssystemet via styrenheten enligt uppfinningen. (Mn exempelvis styr- enheten detekterar en temperturavvikelse i riktning uppåt från. den önskade temperaturnivån, så sänker styrenheten successivt tilluftstemperaturen T enligt kurvan 10 i Fig. l, från ett normalvärde TN, i riktning mot en minimitemperatur TM för tilluften tills önskad temperaturnivå erhålles. Om tillufttemperaturen T därvid når nämnda minimitemperatur TM ökas luftflödet F enligt kurvan ll i Fig. 2 från ett normalflöde FNi.riktning mot ett maximiflöde EV Variationen av tilluftflödet sker lämpligen medelst en varvtalsreglerad fläkt.Figs. 1 and 2 illustrate the control of the ventilation system via the control unit according to the invention. For example, if the control unit detects a temperature deviation in the upward direction from the desired temperature level, the control unit gradually lowers the supply air temperature T according to curve 10 in Fig. 1, from a normal value TN, in the direction of a minimum temperature TM for the supply air until the desired temperature level is obtained. If the supply air temperature T then reaches the said minimum temperature TM, the air flow F is increased according to the curve II in Fig. 2 from a normal flow FN direction towards a maximum flow EV. The variation of the supply air flow takes place suitably by means of a speed-controlled fan.

På motsvarande sätt kan styrenheten, vid detektering av en avvikelse i riktning nedåt från den önskade temperaturniván, tilluftflödet F i ett normalflöde FN tills önskad temperaturnivå erhålles. Härvid successivt sänka riktning mot ökas tilluftstemperaturen T från en minimitemperatur TM i u. .om 517 ess 4 riktning mot en normaltemperatuI'¶§ för inblàsningsluften, om tilluftflödet når nämnda normalflöde FN.Correspondingly, upon detecting a deviation in the downward direction from the desired temperature level, the control air flow F in a normal flow FN can be obtained until the desired temperature level is obtained. In this case, gradually lowering the direction of the supply air temperature T is increased from a minimum temperature TM in the direction of 517 ess 4 direction towards a normal temperature of the supply air, if the supply air flow reaches the said normal flow FN.

Genom den ovan beskrivna styrningen av ventilationssystemet reduceras i normala fall fläkteffekten, vilket sänker energiförbrukningen och dessutom det av systemet alstrade bullret. Genom att påkänningarna på fläktarna reduceras, så minskar även servicebehovet på fläktarna, samtidigt som deras livslängd ökar.The control of the ventilation system described above normally reduces the fan power, which lowers the energy consumption and also the noise generated by the system. By reducing the stresses on the fans, the need for service on the fans also decreases, at the same time as their service life increases.

Uppfinningen är ej begränsad till det ovan beskrivna utföringsexemplet, utan flera varianter är tänkbara inom ramen för efterföljande patentkrav. Exempelvis behöver inte punkten där kurvan 10 når minimivärdet för temperaturen och punkten där kurvan ll ökar från minimivärdet för flödet, sammanfalla, utan dessa båda punkter kan vara separerade längs kylbehovsskalan K.The invention is not limited to the exemplary embodiment described above, but several variants are conceivable within the scope of the appended claims. For example, the point where the curve 10 reaches the minimum value of the temperature and the point where the curve l1 increases from the minimum value of the flow do not have to coincide, but these two points can be separated along the cooling demand scale K.

Claims (3)

10 15 20 25 30 35 0001 0000 to I 517 668 PATENTKRAV10 15 20 25 30 35 0001 0000 to I 517 668 PATENTKRAV 1. Förfarande för styrning av ett system för ventilering vilket system omfattar minst en tilluftkanal till nämnda utrymme, och temperering av utrymmen, tuex. i byggnader, organ för volymreglering av luftflödet (F) till utrymmet, givare för detektering av temperaturen (T) hos luftflödet (F) till utrymmet och givare för detektering av temperaturen hos luftflödet i eller från utrymmet samt en styrenhet för styrning av flöde. och temperatur, varvid styrenheten är inrättad att anpassa tilluftens flöde och temperatur till temperaturvariationer i utrymmet för bibehållande av önskad att vid detektering av ett ökande kylbehov (K), (T) normaltemperatur (TN) i riktning mot en minimitemperatur (TM) temperaturnivå , k ä n n e t e c k n a t därav , styrenheten, sänker från en successivt tilluftstemperaturen varvid luftflödet (F) ökas från ett normalflöde (FN) i riktning mot (FM), minimitemperatur (TM). för tilluften tills önskad temperaturnivå erhålles, ett maximiflöde om tillufttemperaturen når nämndaA method for controlling a ventilation system, which system comprises at least one supply air duct to said space, and tempering of spaces, tuex. in buildings, means for volume control of the air flow (F) to the space, sensors for detecting the temperature (T) of the air flow (F) to the space and sensors for detecting the temperature of the air flow in or from the space and a control unit for flow control. and temperature, wherein the control unit is arranged to adapt the supply air flow and temperature to temperature variations in the space to maintain the desired that when detecting an increasing cooling demand (K), (T) normal temperature (TN) in the direction of a minimum temperature (TM) temperature level, k as indicated thereby, the control unit, lowers from a successive supply air temperature whereby the air flow (F) is increased from a normal flow (FN) in the direction of (FM), minimum temperature (TM). for the supply air until the desired temperature level is obtained, a maximum flow if the supply air temperature reaches the 2. Förfarande enligt kravet 1, k ä n n e t e c k n a t därav, att styrenheten, vid detektering av ett minskande kylbehov (K), successivt sänker tilluftflödet i riktning mot ett normalflöde (FN) 'tills önskad temperaturnivå erhålles, varvid tilluftstemperaturen (TM) i normaltemperatur (TN)för inblåsningsluften, om tilluftflödet ökas från en minimitemperatur riktning mot en når nämnda normalflöde (FN).Method according to claim 1, characterized in that the control unit, upon detection of a decreasing cooling demand (K), successively lowers the supply air flow in the direction of a normal flow (FN) 'until the desired temperature level is obtained, the supply air temperature (TM) at normal temperature ( TN) for the supply air, if the supply air flow is increased from a minimum temperature direction towards a reached said normal flow (FN). 3. Förfarande enligt kravet 1 eller 2, k ä n n e t e c k n a t därav, att regleringen av tilluftflödet sker medelst en varvtalsreglerad fläkt. UUOQOU IIOQIO3. A method according to claim 1 or 2, characterized in that the supply air flow is regulated by means of a speed-controlled fan. UUOQOU IIOQIO
SE9503485A 1995-10-09 1995-10-09 Control of system for ventilating and air conditioning of rooms SE517668C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9503485A SE517668C2 (en) 1995-10-09 1995-10-09 Control of system for ventilating and air conditioning of rooms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9503485A SE517668C2 (en) 1995-10-09 1995-10-09 Control of system for ventilating and air conditioning of rooms

Publications (3)

Publication Number Publication Date
SE9503485D0 SE9503485D0 (en) 1995-10-09
SE9503485L SE9503485L (en) 1997-04-10
SE517668C2 true SE517668C2 (en) 2002-07-02

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ID=20399734

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9503485A SE517668C2 (en) 1995-10-09 1995-10-09 Control of system for ventilating and air conditioning of rooms

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SE (1) SE517668C2 (en)

Also Published As

Publication number Publication date
SE9503485D0 (en) 1995-10-09
SE9503485L (en) 1997-04-10

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